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- W1549519787 abstract "Abstract Sustainability of mined‐land reclamation is of growing importance, with over 600,000 ha of the Appalachian coal region disturbed since 1977. Long‐term evaluation of soil under various reclamation strategies is also important. Aggregation and organic matter (OM) influence both soil structure and function and can be of use in evaluating reclaimed systems. The objective of this study was to examine these two parameters in a long‐term experiment (27 years) where various types (control‐CON, topsoil‐TS, sawdust‐SD and biosolids‐BS) and rates of soil amendments (biosolids: BS‐22, BS‐56, BS‐112 and BS‐224 Mg ha −1 ) have been applied. Macroaggregates (>250 µm) comprised >95% of total aggregation across all treatments, indicating the importance of this size class for soil development. Macroaggregate carbon (C) and nitrogen (N) pools contributed more to stabilization of OM in these soils than microaggregate pools. All BS treatments contained higher concentrations of aggregate C (96·8–127 g C kg −1 aggregate) and N (6·80–8·22 g N kg −1 aggregate) relative to CON; however, mass of C and N did not vary among application rates. Though few differences were expressed in C and N pool sizes among treatments, there was some indication that amendments impact reclaimed sites early in soil development (~ < 10 years), while vegetation may exert more dominance in subsequent years. It is important to select appropriate management strategies to favor not only the establishment of desirable vegetation but also preservation of soil macroaggregate structure to improve long‐term nutrient supply, physical soil properties and potential C‐sequestration in reclaimed soils. Copyright © 2014 John Wiley & Sons, Ltd." @default.
- W1549519787 created "2016-06-24" @default.
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- W1549519787 date "2014-09-02" @default.
- W1549519787 modified "2023-10-10" @default.
- W1549519787 title "Aggregate Recovery in Reclaimed Coal Mine Soils of SW Virginia" @default.
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- W1549519787 doi "https://doi.org/10.1002/ldr.2309" @default.
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